1. From the Cardiology Division (J.A.M.-N., B.C.M., M.V.S.), Department of Internal Medicine, Medical School of Ribeirão Preto, University of São Paulo; the Heart Institute (InCor), University of São Paulo, and Institute for Investigation in Immunology, Millenium Institutes–Conselho Nacional de Pesquisa (E.C.-N.), São Paulo, Brazil.